Paediatric orthopaedics Flashcards
What is the most common cause of hip pain?
Transient synovitis
Transient Synovitis : Definition
Self-limiting condition which is triggered by a viral infection and causes inflammation of the synovial
Transient Synovitis : Pathophysiology
- Viral infection : triggers an immune response
- Inflammation of synovial lining of the hip job
- Pain and inflammation of the unilateral hip joint
Transient Synovitis : Incidence
- Male children
- 3 years - 8 years
Transient Synovitis : Clinical features
- Preceding recent viral infection
- Unilateral hip/groin pain } develops acutely
- Limp/refusal to weight bear
- Systemically well - may have low grade fever
- Sx present for <72 hours
Transient Synovitis : Management
Self-limiting, requiring only rest and analgesia.
Slipped upper femoral epiphysis : Definition
Displacement of the femoral head, commonly seen in overweight children
Slipped upper femoral epiphysis : Pathophysiology
- Adolescence during growth spurt:
* Growth plate is a weak area where growth occurs - Increased stress on the hip joint
* Mechanical stress
* Obesity - Head of the femur slips and is displaced at the growth plate - posterior-inferiorly
Slipped upper femoral epiphysis : Risk factor
Adolescence
Mechanical stress : Obesity, Trauma
Slipped upper femoral epiphysis : Clinical features
- Acute/Chronic :
* Hip, medial thigh, knee pain - Loss of internal rotation in flexion
Slipped upper femoral epiphysis : Investigation
XR - Frog-leg views
Slipped upper femoral epiphysis : Management
Surgery : internal fixation
Septic arthritis : definition
Infection of a joint - can progress to systemic infection
Septic arthritis : Clinical features
- Joint pain : Hip, Knee and Ankle (most common)
- Limp : unable to weight bear
- Systemically unwell : High Fever, lethargy
Septic arthritis : Clinical signs
- Red, hot swollen joint
- Limited range of movement
Septic arthritis : Investigation
- Bloods : Raised WCC, ESR
- Blood cultures
- Joint aspiration : Raised WCC, for culture
Perthes disease : Definition
- Disruption of the blood supply to the femoral head
- Leading to avascular necrosis - infarction of the bone - leading to femoral head deformity
Perthes disease : Incidence
- 4-8 years old } during period of rapid growth increase
- Boys : 5x more common